<template>
    <div class="wrapper" style='margin-top:200px'>
        <div ref="box"  class="box">
            <text class="info">Width: {{size.width}}</text>
            <text class="info">Height: {{size.height}}</text>
            <text class="info">Top: {{size.top}}</text>
            <text class="info">Bottom: {{size.bottom}}</text>
            <text class="info">Left: {{size.left}}</text>
            <text class="info">Right: {{size.right}}</text>
        </div>

        <text class="info btn"  @click='click()'>{{this.tip}}</text>

    </div>
</template>
<script>
    const dom = weex.requireModule('dom')

    function round(size) {
        var roundSize = {
            'width': Math.round(size.width),
            'height': Math.round(size.height),
            'top': Math.round(size.top),
            'bottom': Math.round(size.bottom),
            'left': Math.round(size.left),
            'right': Math.round(size.right)
        }
        return roundSize
    }
    export default {
        data () {
            return {
                size: {
                    width: 0,
                    height: 0,
                    top: 0,
                    bottom: 0,
                    left: 0,
                    right: 0
                },
                ref:"viewport",
                tip:"get box rect"
            }
        },
        mounted () {
            const result = dom.getComponentRect(this.ref, option => {
                console.log('getComponentRect:', option)
                this.size = round.call(this,option.size);
            })
        },

        methods:{
            click:function() {
                if (this.ref === 'viewport') {
                    this.ref = this.$refs.box;
                    this.tip = "get viewport rect"
                } else {
                    this.ref = 'viewport'
                    this.tip = "get box rect"
                }

                const result = dom.getComponentRect(this.ref, option => {
                    console.log('getComponentRect:', option)
                    this.size = round.call(this,option.size);
                })
            }
        }

    }
</script>
<style scoped>
    .btn {
        margin-top:20px;
        border-width:2px;
        border-style: solid;
        border-radius:10px;
        width:300px;
        margin-left:170px;
        padding-left:35px;
        border-color: rgb(162, 217, 192);

    }
    .btn:active {
        background-color: #8fbc8f;
        border-color: gray;
    }

    .box {
        align-items:center;
        margin-left: 150px;
        width: 350px;
        height: 400px;
        background-color: #DDD;
        border-width: 2px;
        border-style: solid;
        border-color: rgb(162, 217, 192);
        background-color: rgba(162, 217, 192, 0.2);
    }
    .info {
        font-size: 40px;
        top:30px;
        margin-left:20px;
        font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
        color: #41B883;
    }
</style>